From 33bbcd9c98ce97eead13199dbb6680a3e5b77b48 Mon Sep 17 00:00:00 2001
From: Trevor Parscal <tparscal@users.mediawiki.org>
Date: Wed, 2 Nov 2011 22:00:25 +0000
Subject: [PATCH] Copying serializer code to VisualEditor extension

---
 modules/es/es.AnnotationSerializer.js | 60 +++++++++++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 modules/es/es.AnnotationSerializer.js

diff --git a/modules/es/es.AnnotationSerializer.js b/modules/es/es.AnnotationSerializer.js
new file mode 100644
index 0000000000..c81cfabd7a
--- /dev/null
+++ b/modules/es/es.AnnotationSerializer.js
@@ -0,0 +1,60 @@
+/**
+ * Creates an annotation renderer object.
+ * 
+ * @class
+ * @constructor
+ * @property annotations {Object} List of annotations to be applied
+ */
+es.AnnotationSerializer = function() {
+	this.annotations = {};
+};
+
+/* Static Methods */
+
+/**
+ * Adds a set of annotations to be inserted around a range of text.
+ * 
+ * Insertions for the same range will be nested in order of declaration.
+ * @example
+ *     stack = new es.AnnotationSerializer();
+ *     stack.add( new es.Range( 1, 2 ), '[', ']' );
+ *     stack.add( new es.Range( 1, 2 ), '{', '}' );
+ *     // Outputs: "a[{b}]c"
+ *     console.log( stack.render( 'abc' ) );
+ * 
+ * @param range {es.Range} Range to insert text around
+ * @param pre {String} Text to insert before range
+ * @param post {String} Text to insert after range
+ */
+es.AnnotationSerializer.prototype.add = function( range, pre, post ) {
+	// TODO: Once we are using Range objects, we should do a range.normalize(); here
+	if ( !( range.start in this.annotations ) ) {
+		this.annotations[range.start] = [pre];
+	} else {
+		this.annotations[range.start].push( pre );
+	}
+	if ( !( range.end in this.annotations ) ) {
+		this.annotations[range.end] = [post];
+	} else {
+		this.annotations[range.end].unshift( post );
+	}
+};
+
+/**
+ * Renders annotations into text.
+ * 
+ * @param text {String} Text to apply annotations to
+ * @returns {String} Wrapped text
+ */
+es.AnnotationSerializer.prototype.render = function( text ) {
+	var out = '';
+	for ( var i = 0, length = text.length; i <= length; i++ ) {
+		if ( i in this.annotations ) {
+			out += this.annotations[i].join( '' );
+		}
+		if ( i < length ) {
+			out += text[i];
+		}
+	}
+	return out;
+};